The dealer wars just got more interesting. Luxury electric-vehicle manufacturer Tesla launches a referral program, with new owners receiving $1,000 discounts and those making the referrals getting $1,000 of their own.

Just last week Chrysler recalled 1.4 million vehicles after hackers revealed a software bug. Now, a new hack exposes a vulnerability in GM vehicles equipped with OnStar. Users of the iOS RemoteLink app are encouraged to update ASAP.